Electric timing device.



No. 848,621. PATENTED FEB. 12, 1907. H. H. MQINTIRE.

ELECTRIC TIMING DEVICE.

APPLICATION FILED MAR. 29, 1904.

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UNITED STATES PATENT OFFICE.

HERVEY H. MoINTIRE, or SOUTH BEND, INDIANA.

ELECTRIC TIMING DEVICE.

To all whom, it may concern;

Be it known that I, HERVEY H. MCINTIRE,

a citizen of the United States, residing at South Bend, in the county ofSt. Joseph and State of Indiana, have invented certain new and usefulImprovements in Timing Devices;

- and I do hereby declare the following to be a full, clear, andexact-description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same. l

This invention relates to a timing device, and is more es eciallyadapted for use in connectionwithpffotographic-printing machines, andhas for its object to provide means for sigrilaling certain, units ofdivision of time w ch may be predetermined, so as to indi-' cate theexact time of exposure for each print.

connection between the switch and contact member to operate an electricbell, annunciator, or other means for bringing auricular notice of thecontact.

The invention further consists in the construction, combination, andoperative aggroupment of parts, all as will be more fully describedhereinafter, illustrated in the accompanying drawings, and finallypointed out in the appended claims.

In the drawings, Figure 1 is a plan View of the device with a portion ofthe motor-driven contact member shown in section and with the side andend walls of the case shown in section. Fig. 2 is a front elevation withthe front of the case broken away to expose the I operating mechanism ofthe device.

Making renewed reference to the drawings, 1 designates a case, whichincloses the operating mechanism of the timin device. Mounted in thecase is motor 2, whic is of any suitable type'and which is adapted to imart a continuous rotary motion to a shaft 3, t ere being a suitablemeans connected with the motor for maintaining a uniform speed ofrotation of the shaft.

Specification of Letters Patent.

Application filed March 29, 1904. Serial No. 200 64.2.

Patented Feb. 12, 1907.

Rigidly secured upon the end of the shaft 3, and preferably by aninsulated connection, is a contact member 4, which consists'of thecircular disk having a flanged rim 5. This" contact member or disk ispreferably disposed vertically within its case. Upon the outer face andinclosed by the annular flange 5 is an insulator pad or block 6. Securedto the disk and projecting from the front face thereof through theinsulating pad or block are a plurality of contact-pins 7, Which arearranged in annular rows therearound, and the pins of each row arespeacd at equal distances apart; but each row contains a-differentnumber of pins, so that the distance between the pins of each succeedingrow increases from the periphery toward the center of the disk and thenumber of pins in each row decreases.

Secured to the front of the case on the inside thereof is a bracket 8,in which is pivoted, as by a pin 9, a combined switch and indicator 10,which consists of an arm, the lower endof which carries a contact-pin11, which projects toward the disk and in the path of the contactin 7carried thereby, and this portion of t e arm constitutes a switch tomake or break an electric currentbetween the arm and the disk. Thatportion of the arm which projects above its fulcrum is formed into apointer or indicator 12, which is offset, as at. 13. The offset portionextends through a slot 14 in the front of the case and is provided witha knob 15 to facilitate the manipulation thereof. Since the arm has afixed pivot, the ends thereof will oscillate, and for this urpose theslot 14 is curved to conform to t e are described by the offset portionof the arm.

Above the slot on the outside of the case is a scale 16, on which arecharacters which indicate the time that will elapse between each intoalinement with the row of pins having tlfe required spaces therebetweento register the proper interval of time on the indicator.

Pivoted between two ears 17 in the bottom of the case is a contact-lever18, the outer end of which is weighted, as at 19, to hold the inner endthereof into engagement with the periphery or flanged rim of the disk.

The contact-pin 1 1 in the end of the switch arm is provided with athumb-nut 20, which may serve as a binding-post for an electricconductor A, which is connected with to another binding-post 21 of anelectric bell 22 in the usual manner. Secured to the conseaeai Havingthus described my invention, what I claim, and desire to secure byLetters Patent, is

1'. In a device of the class described, the combination of a rotary diskhaving rows of contact-pins arranged therearound, a pivoted memberhaving one end arranged to engage the contact-pins and constituting oneterminal of an electric circuit and its other end formed into a pointer,a contact member permanently held in contact with the periphtact-lever18 is an electric conductor B, which ery of the disk and constitutingthe other ter is connected to one of the electrodes 23 of a minal of thecircuit, and an alarm included in battery jar or cell X, the otherelectrode of the circuit, substantially as specified.

5D the battery being connected with bindingpost 21 by a conductor C, sothat when contact-pin 11, carried by the switch, is engaged with thecontact-pins 7 of the disk the circuit will be closed and the bell willring to indizo cate that the contact was made. Instead of the bell shownin the drawings any suitable annunciator or signaling device may beemployed, since the sole object of the same is to bring auricular noticethat the contact has 2 5 been made.

Assuming that the motor ,2 drives the contact member or disk 4 at such aspeed as to give it one rotation every minute and the indicator 12 isset on the scale opposite the nu- 0 meral 2 at one end thereof, theswitch end of the arm, with its contact-pin 11, will be in the path ofthe outer row of pins, and assuming that this outer row contains thirtypins which are spaced apart equal distances the contact will occur everytwo seconds, and therefore the bell will be rung thirty times during theone revolution of the disk. Obviously the indicator may be moved tochange and predetermine the period of time between each contact andannunciation, and in Fig. 2 the combined indicator and switch is shownin dotted lines as being set to annunciate once in every rotation of thedisk or once every minute. In this respect it will be noted that thecombined switch and indicator is fixed with relationto any particularrow of pins carried by the contact member 4, but movable relatively tothe latter to change the time between the contacts and the annunciationthereof. In this way the operator may set the indicator at the lowestpoint on the scale, watch the printing of a picture,

and count the number of sounds of the bell,

and when he has determined the time necessary for the exposure he mayset the indicator to that point at which only one annunciation isnecessary to notify him of the exposure 2. Means for signaling ormeasuring certain units or divisions of time of a predetermined periodembodying a continuously-- driven member having contact-pins spacedapart at equal distance thereon, a switch movable relatively to thecontact-points of the continuously-driven member and adapted to engagetherewith, an indicator on one end of the switch to adjust the latterand vary the periodv of contact between the switch and the contact-pinsof the continuously-driven member, a scale, over which the indicatormoves, having characters to indicate the number of units of time thatelapse between the contacts, a contact member constantly held engagedwith the disk, an an nunciator, and an electric connection for theswitch, the .annunciator and the last-mentioned contact member.

3. Means for signaling or measuring certain units or divisions of timeof a predetermined period embodying a continuouslydriven disk havingcontact-pins projecting from the face thereof and also having aninsulating pad or block through which the pins project, a pivoted armhaving a contact-pin in its lower end to constitute a switch and itsupper end formed into an indicator and constituting a means foradjusting the switch with relation to the contact-pins on the disk, ascale, over which the indicator moves, having characters to indicate thenumber of units of time that elapse between the contacts, a weightedcontact-lever constantly en aged with the disk, an annunciator, andelectrical connections for the switch, the annunciator and the weightedcontact-lever, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

'HERVEY H. MCINTIRE.

Witnesses:

, GEORGE Ourson,

' HUGO Queen.

